Target Audience:
Enthusiasts, DIY mechanics, and auto electricians working on classic Vauxhall/Opel Manta and Ascona models, particularly those retrofitting or repairing electrical systems with a universal harness.
Uniqueness:
Specialized focus on the EZ20 universal harness integration, which is a key differentiator for restoration or modification projects.
Diagnostic Aid:
Crucial tool for troubleshooting complex electrical gremlins common in older vehicles.
Restoration Resource:
Essential for accurate and reliable electrical system restoration or upgrades.
Customization Support:
Facilitates understanding of how to modify or extend wiring for custom setups.
Primary Focus:
Electrical system wiring diagrams.
Secondary Focus:
Integration of Universal EZ20 wiring harness, electrical troubleshooting.
Estimated Pages:
N/A (Detailed page count not provided in product information, but expected to be substantial for wiring diagrams).
Type:
Wiring Diagram Manual / Electrical Service Manual.
Language:
Likely English (common for such manuals).
Format:
Digital (PDF implied by 'diagram manual' often sold digitally).
Electrical Lighting:
Headlights, taillights, brake lights, turn signals, interior lighting, hazard lights.
Electrical Ignition:
Ignition system components, coil, distributor (if applicable), spark plugs, wiring.
Electrical Starting:
Starter motor, solenoid, battery connections, ignition switch wiring.
Electrical Charging:
Alternator, voltage regulator, battery charging circuit.
Electrical Gauges Instruments:
Speedometer, tachometer, fuel gauge, temperature gauge, oil pressure gauge, warning lights.
Electrical Wiper Washer:
Wiper motor, washer pump, switches, relays.
Electrical HVAC:
Heater blower motor, controls, associated wiring.
Electrical Audio Accessories:
Radio wiring, speaker connections, cigarette lighter/power outlets.
Electrical Engine Management:
Wiring for basic engine sensors (e.g., oil pressure, temperature) and actuators, as relevant for the 1.9L engine era.
Troubleshooting Methods:
Systematic diagnosis of electrical faults using wiring diagrams.
Component Identification:
Location and function of electrical components and their wiring connections.
Wiring Diagram Interpretation:
Understanding of schematic symbols, wire colors, and circuit routing.
Harness Installation Guidance:
Specifics on integrating the Universal EZ20 wiring harness into the vehicle's existing electrical architecture.
Depth:
Detailed electrical circuit schematics and component layouts.
Diagnostic Level:
Intermediate to advanced, suitable for identifying and resolving electrical issues, especially those related to a custom/universal harness.
Digital Format:
PDF (Portable Document Format) is standard and highly probable.
Searchability:
Likely searchable text, enabling quick navigation to specific components or circuits.
Printability:
Designed for clear reproduction in print for workshop use.
Physical Binding:
N/A (Digital format, but if printed would likely be spiral-bound for lay-flat use).
Physical Paper:
N/A (Digital format, but original manuals used durable paper stock).
Engine Family:
Opel CIH (Cam-in-Head) engine family.
Engine Displacement Litres:
1.9 Litres (1897 cc).
Engine Bore X Stroke:
Approx. 92.0 mm x 70.0 mm (common for 1.9L CIH).
Engine Code Examples:
e.g., 19S, 19N, 19SR (specific to tuning/variant).
Horsepower Range Approx:
Typically 75-90 PS (DIN) for standard versions, potentially higher for sportier variants like SR.
Torque Range Approx:
Around 140-160 Nm (DIN) for standard versions.
Fuel Delivery:
Typically carbureted (e.g., Solex, Weber) for most 1.9L variants.
Fuel Type:
Unleaded gasoline (petrol).
Configuration:
Inline 4-cylinder.
Drive Type:
Rear-wheel drive (RWD).
Body Styles:
Manta B: Coupe (2-door), Ascona B: Sedan (4-door), Hatchback (3-door, known as 'CC').
Wheelbase Mm:
Approx. 2500-2600 mm (varies slightly by model/generation).
Curb Weight Kg Approx:
1000-1150 kg (depending on body style and equipment).
Era Safety Standards:
Reflects 1970s/early 1980s safety standards, typically lacking modern crumple zones, airbags, or advanced ABS.
Braking System:
Front disc brakes, rear drum brakes. Power assistance often standard.
Seatbelts:
Front seatbelts (lap and diagonal), rear lap belts.
Construction:
Unitary body construction (monocoque).
Oil Change Interval:
Typically every 5,000-7,500 miles (8,000-12,000 km) or 6-12 months, depending on usage and oil type.
Spark Plug Replacement:
Around 15,000-20,000 miles (24,000-32,000 km).
Engine Oil Type:
API SG/SF or higher, viscosity typically 10W-40 or 20W-50 depending on climate. Refer to specific engine variant for precise recommendations.
Coolant Type:
Ethylene glycol based antifreeze/coolant, mixed with distilled water (typically 50/50 ratio).
Transmission Fluid Manual:
GL-4 gear oil, typically 80W-90 viscosity.
Transmission Fluid Automatic:
Dexron III (or equivalent) automatic transmission fluid (ATF).
Electrical Common:
Degradation of wiring insulation, faulty switches, corrosion in connectors, issues with fuse box contacts, starter solenoid failure.
Engine Common:
Carburetor tuning issues, timing chain wear (CIH engines), oil leaks from seals and gaskets.
Body Common:
Rust in common areas: wheel arches, sills, floor pans, bulkhead, rear valence.
Vauxhall Opel Legacy:
Part of Opel's tradition of producing popular, sporty, and reliable cars for the European market, often rebadged for other markets (e.g., Holden in Australia).
Manta Evolution:
The Manta B (1975-1988) was a rear-wheel-drive coupe, successor to the Manta A. Known for its sporty styling and often powerful engines.
Ascona Evolution:
The Ascona B (1975-1981) was the sedan and hatchback counterpart to the Manta B, offering more practicality while sharing many mechanical components.
Production Period Manta B:
1975–1988
Production Period Ascona B:
1975–1981
Manufacturing Locations:
Germany (Rüsselsheim), UK (Ellesmere Port for Vauxhall versions).
